fallback1.holterman.com - robtex.com
fallback1.holterman.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a02:2870:1:106:46:17:8:251🇳🇱 GLOBAL-E2a02:2870::/33 Ospito B.V. | ||||||
| PTR | fallback1.ospito.nl | ||||||
| A | 46.17.8.251🇳🇱 GLOBAL-E46.17.8.0/22 Ospito B.V. | ||||||
holterman.com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 46.17.8.90🇳🇱 GLOBAL-E46.17.8.0/22 Ospito B.V. | ||||||
| NS | ns1.ospito.nl ⭐ | ||||||
| NS | ns2.ospito.net | ||||||
| NS | ns3.ospito.eu | ||||||
| MX | mail.holterman.com ⭐ | ||||||
| MX | fallback1.holterman.com(20) | ||||||
| MX | fallback2.holterman.com(30) | ||||||
| MX | fallback3.holterman.com(40) | ||||||
| TXT | v=spf1 a mx ip4:46.17.8.90 include:_spf.exactonline.nl -all | ||||||
| SOA | ns1.ospito.nlhostmaster@holterman.com 2026-07-05 #4 | ||||||
MX for
DNS History
2 records (2 active, 0 former)
●A2a02:2870:1:106:46:17:8:2512026-07-20 → 2026-07-27 · 2 obs
● 2026-07-20 13:56:56
● 2026-07-27 12:24:00
● 2026-07-27 12:24:00
●A46.17.8.2512026-07-20 → 2026-07-27 · 2 obs
● 2026-07-20 13:56:56
● 2026-07-27 12:24:00
● 2026-07-27 12:24:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| holterman.com | ns2.ospito.net, ns1.ospito.nl, ns3.ospito.eu | - |
✅ Authoritative Response
Server:46.17.15.250
NS records: ns2.ospito.net, ns1.ospito.nl, ns3.ospito.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 719ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 46.17.8.251 |
| AAAA | 1 | 2a02:2870:1:106:46:17:8:251 |
Analysis
Mail Server Role
holterman.com uses fallback1.holterman.com as a mail server.
mail.holterman.com, fallback2.holterman.com and fallback3.holterman.com are frequently seen as mail servers alongside fallback1.holterman.com.
IP Addresses
fallback1.holterman.com directs to two IP numbers, 46.17.8.251 and 2a02:2870:1:106:46:17:8:251
fallback1.jaba-montage.nl, fallback1.droomhuisinspanje.nl, fallback1.alarmkoppeling.nl and two other host names share IP numbers with fallback1.holterman.com.